alcatel-lucent-5ess

Lucent 5ESS

Extend the life of your Lucent 5ESS system with Carritech’s expert support services—trusted solutions that keep your legacy infrastructure running smoothly and cost-effectively.

About the Lucent 5ESS

The Lucent 5ESS Switch (Class 5) manufactured by Lucent Technologies is one of the most popular in the world servicing at one point in time approximately half of all U.S. telephone lines.

The VCDX (Very Compact Digital eXchange) was marketed to small telephone companies and was used in some instances as a large PBX. It consisted of a single Switching Module, had no Communications Module, and used a Sun Microsystems workstation as its Administrative Module.

Key Features of the Lucent 5ESS

Lucent 5ESS Switch has three main types of modules: Switching Module (SM), Administrative Module (AM) and Communication Module (CM).

Technical Information

Lucent 5ESS Switch has three main types of modules:

  • Switching Module (SM) – Each SM handles several hundred to few thousand telephone lines or several hundred trunks or mixture thereof where each of them has its own processors, also called Module Controllers, which perform most call handling processes, using their own memory boards.
  • Administrative Module (AM) – AM is a dual processor mini main frame computer of the AT&T 3B series, running UNIX-RTR. AM contains the hard drives and tape drives used to load and backup the central and peripheral processor software and translations.
  • Communication Module (CM) – The Communications Modules form the central time switch of the exchange. 5ESS runs on a Time-Space-Time (TST) topology in which the Time-Slot-Interchangers (TSI) in the Switching Modules (SM) assign each phone call to a time slot for routing through the CM.

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From expert maintenance and repair to reliable part sourcing and technical consultation, we provide comprehensive support for every stage of your network’s lifecycle. Whether you’re extending the life of legacy systems or integrating with modern infrastructure, our team ensures seamless, efficient, and cost-effective solutions—so you can focus on performance, not problems.

Fourniture de pièces

We have thousands of Lucent 5ESS parts in stock.

Support technique à distance

Remote technical support is available for Lucent 5ESS products

Réparation et remise à neuf

We repair Lucent 5ESS parts.

Learn more about the Lucent 5ESS

Explore the background, key features, specifications, and technical background of the Alcatel 1000 E10. Learn how it fits into modern and legacy network environments, its typical use cases, and how we support it through repair, maintenance, and spare part services. Whether you’re operating an active system or managing a transition, you’ll find everything you need to know right here.

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